CAJ | 학술논문

　　现有木薯种植工艺与收获工艺不匹配或收获机本身结构的缺陷，导致机械式木薯收获过程中碎薯现象普遍，限制了木薯的采后经济价值。针对以上问题，对木薯收获机的入土齿刀板、限深板和立柱结构进行改进，有效避免了因受力对位不正、入土深度不够和木薯起获后壅堵等原因造成的侧断、铲断和折断现象。试验结果表明，改进后的木薯收获机入土响应时间仅为1．2s，入土深度达到33cm，碎薯率仅为1．7％，有效地提高了木薯收获机的工作质量。
　　현유목서충식공예여수획공예불필배혹수획궤본신결구적결함，도치궤계식목서수획과정중쇄서현상보편，한제료목서적채후경제개치。침대이상문제，대목서수획궤적입토치도판、한심판화립주결구진행개진，유효피면료인수력대위불정、입토심도불구화목서기획후옹도등원인조성적측단、산단화절단현상。시험결과표명，개진후적목서수획궤입토향응시간부위1．2s，입토심도체도33cm，쇄서솔부위1．7％，유효지제고료목서수획궤적공작질량。
The root damage rate of the cassava harvester before optimization was high because of the unsuitability of the cultivation system to the harvesting system and structural defects of the harvester itself , which would cause difficulties for postharvest preservation of cassava and affected its economic value .To solve the problem , the structures of toothed cut-ting board , depth control board and upright post were modified to optimize the cassava harvester .The optimization effec-tively reduce cassava root damages of being scraped , cut, and snapped in harvesting resulting from stress deviation , low penetrating depth and root jamming after being lifted .The experimental results showed that the buried response time of only 1.2s, the depth will be reach to 33cm,the root damage rate of the optimized cassava harvester was only 1.7%and its performance satisfied the requirements for optimization .